The cricket pavilion where Cook and Pinder hide has fixture lists which give the club's name as Edgemere. However, when Regan and Carter later hide in the scoring shed nearby, there is a sign on the outside that gives the name as Edgebury.
When Carter comes to the pub to tell Regan about Cook's escape, Regan introduces his girlfriend as Pat Knightly. But later on when Regan phones Pat's neighbor and asks for "Miss Knightly", Carter sniggers and asks "Is that Pat's name? Knightly?"
When the uncle is thrown through the window by the criminal, you can see briefly that he (probably a stunt double) is actually jumping through it.
When Carter questions Pinder at the garage, we see exhaust pipes while the engine revs. You can clearly see the reflection of a clapper-board in the car paintwork near the exhaust.
Anna Wing's character Mrs. Haldane incorrectly states in her statement to Regan that on the run crook Tim "the Leopard" Cook had dark glasses on when she saw him.